Carbon nanotube detection in plants through microwave-induced heating

通过微波诱导加热检测植物中的碳纳米管

• 批准号: 1133250
• 负责人: Micah Green
• 金额: $ 30万
• 依托单位: Texas Tech University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1133250&HistoricalAwards=false
• 关键词: Carbon; nanotube; detection; plants; through

1133250GreenThis NSF award by the Environmental Health and Safety of Nanotechnology program supports work by Professors Micah Green, Jaclyn Cañas, and Mohammad Saed of Texas Tech University to develop new methods to detect the presence of carbon nanotubes in agricultural crops. Carbon nanotubes are among the most widely used carbon-based nanomaterials, and one area of potential use for nanotubes is for the improvement and benefit of agricultural production, such as smart delivery systems for pesticides and other chemicals. The study of nanotube uptake into the roots of agricultural crops is a pressing issue; this is particularly true in regard to the industrial interest in utilizing nanotubes in agricultural pesticides and other products that might deposit nanotubes in soil. However, common methods of detecting trace amounts of nanotubes in crops are limited. The Texas Tech team will pioneer a new technique to detect these materials in crops by using low-power microwave exposure. Although this unusual property has been known for some time, it has never been utilized to solve scientific challenges in the area of environmental toxicology. Nanotubes undergo rapid heating in response to microwaves at levels much higher than other common materials. The Texas Tech team will test the hypothesis that microwave exposure will show a marked difference between nanotube-laden and nanotube-free agricultural samples. The microwave-based characterization method is both novel and useful, as it addresses a major scientific problem in the field of nanotoxicology. This concept is enabled by the uniquely collaborative combination of expertise fielded by the PI and co-PIs in their respective areas of nanomaterials, toxicology, and microwave physics. Microwave heating of CNTs has never been used for detection before and has never been applied to the critical issue of nanotechnology?s environmental and agricultural effects. Thus, this program has the potential to have widespread impacts on safety and testing protocols for nanomaterial-based agricultural products in the U.S. The outreach and diversity efforts of the program will place a particular emphasis on recruiting undergraduate researchers from underrepresented groups and incorporating these students and their interdisciplinary research findings into educational outreach programs. These activities will augment and further disseminate successful K-12 educational programs initiated by the PI and co-PIs under prior NSF awards.

1133250绿色这个由纳米技术计划的环境健康和安全的NSF奖支持由Micah绿色教授，Jaclyn Cañas和德克萨斯理工大学的Mohammad Saed开发新方法来检测农作物中碳纳米管的存在。碳纳米管是使用最广泛的碳基纳米材料之一，碳纳米管的一个潜在用途是改善农业生产，例如农药和其他化学品的智能输送系统。 纳米管吸收到农作物根部的研究是一个紧迫的问题;这对于在农业杀虫剂和其他可能使纳米管存款在土壤中的产品中利用纳米管的工业兴趣而言尤其如此。 然而，检测农作物中痕量纳米管的常用方法是有限的。德克萨斯理工大学的研究小组将开创一种新技术，通过使用低功率微波照射来检测农作物中的这些物质。虽然这种不寻常的性质已经被发现了一段时间，但它从未被用来解决环境毒理学领域的科学挑战。纳米管在微波的作用下会迅速受热，其加热水平远高于其他普通材料。德克萨斯理工大学的研究小组将测试一个假设，即微波暴露将显示纳米管负载和纳米管无农业样品之间的显着差异。 基于微波的表征方法既新颖又有用，因为它解决了纳米毒理学领域的一个主要科学问题。这一概念是由PI和co-PI在纳米材料，毒理学和微波物理学各自领域的专业知识的独特合作组合实现的。微波加热碳纳米管从来没有被用于检测之前，从来没有被应用到纳米技术的关键问题？环境和农业影响。因此，该计划有可能对美国纳米材料农产品的安全和测试协议产生广泛影响该计划的推广和多样性工作将特别强调从代表性不足的群体中招募本科研究人员，并将这些学生及其跨学科研究成果纳入教育推广计划。这些活动将扩大和进一步传播由PI和co-PI根据先前的NSF奖项发起的成功的K-12教育计划。